.google-maps iframe {
    width: 100% !important;
    height: 100% !important;
}

@media (min-width: 640px) {
    .google-maps iframe {
    	width: 600px !important;
        height: 450px !important;
    }
}

@media (min-width: 1024px) {
    .google-maps iframe {
    	width: 600px !important;
        height: 450px !important;
    }
}